The hash type of the Python Redis operation other common operations

1.hash type Operation

Import Redispool = Redis. ConnectionPool (host= "192.168.48.131", port=6379, db=0) R = Redis. Redis (Connection_pool=pool)

#hash类型操作: is a name corresponding to a dictionary

#语法 Hset (name, key, value)

A key-value pair is set #name the corresponding hash (does not exist, the key-value pair is created; otherwise, the key-value pair is modified)

# syntax parameter explanation:

Name:redis's hash name

Key:key1 corresponding to the key in the hash

Value:value1 value in the corresponding hash

#注意: Hsetx (name, key, value), created (equivalent to add) if the current key does not exist in the hash of name.

Hget (Name,key)

#在name对应的hash中获取根据key获取value

Hmset (name,mapping)

#在name对应的hash中批量设置键值对

#参数:

#mapping: Dictionary, as {' K1 ': ' v1 ', ' K2 ', ' v2 '}

#例:

R.hmset (' Test ', {' K1 ': ' v1 ', ' K2 ': ' v2 '}) print (R.hmget (' Test ', ' K1 ', ' K2 ')) #结果 [b ' v1 ', B ' v2 ']

Hmget (Name,keys,*args)

#在name对应的hash中获取多个key的值

#参数:

#keys: To get a collection of keys, such as: [' K1 ', ' K2 ', ' K3 ']

#*args: The key to get, such as: K1,K2,K3

#例:

R.hmset (' Test ', {' K1 ': ' v1 ', ' K2 ': ' v2 '}) print (R.hmget (' Test ', ' K1 ', ' K2 ')) #获取多个值

Hgetall (name)

Gets the name of all the key values corresponding to the hash

R.hmset (' Test ', {' K1 ': ' v1 ', ' K2 ': ' v2 '}) print (R.hgetall (' Test ')) #结果: {b ' k2 ': B ' v2 ', B ' K1 ': B ' v1 '}

Hlen (name)

Gets the number of key values in the hash for name

R.hmset (' Test ', {' K1 ': ' v1 ', ' K2 ': ' v2 '}) print (R.hlen (' Test '))

Hkeys (name): Gets the value of all keys in the hash corresponding to name

hvals (name): Gets the value of all the values in the hash corresponding to name

#举例: R.hmset (' Test ', {' K1 ': ' v1 ', ' K2 ': ' v2 ') ' Print (R.hkeys (' Test ')) ', ' (r.hvals (' Test ') ') #结果: [B ' K2 ', b ' K1 '][b ' v2 ', B ' V1 ']

hexists (Name,key): checks if the hash name corresponds to the current key being passed in

Hdel (Name,*keys): deletes the key value pair of the specified key in the hash name corresponding to

Example:

R.hmset (' Test ', {' K1 ': ' v1 ', ' K2 ': ' v2 '}) print (r.exists (' Test ')) print (R.hdel (' Test ', ' K1 ') "Print (R.hmget (' Test ') ', ' K1 ', ' K2 '))

2. Other common operations

#根据name删除redis中的任意数据类型

Delete (*names)

#检测redis的name是否存在

Exists (name)

#根据 *? Wait for wildcard matches to get the name of a Redis

Keys (pattern= ' * ')

# Set a time-out for a name

Expire (name, time)

# rename

Rename (src, DST)

# move one of the Redis values to the specified db

Move (name, DB))

# Gets the type of the name corresponding value

Type (name)

The hash type of the Python Redis operation other common operations